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Wood stoves are set by room volume, ceiling height and the flue route. Check each point with your installer and local fire authority.
Have these ready before ordering
The Harvia Pro 36 package pairs a 31 kW wood-burning sauna stove with a black WHP1500M steel chimney, WL850 protective sheath, WL110 floor bedding and 3 boxes of stones. Harvia rates it for large saunas of 494 to 1271 cu ft.
Harvia built the Pro 36 for fast, hot, dry heat in big rooms and groups. The front, top and ash box are stainless steel, the sides graphite black. A cast-iron glass hatch shows the fire, and the door hinges either way.
Who it's built for
When it's not the right fit
Check before ordering
The Pro 36 needs 19.7 in (500 mm) to combustible walls on every side and 49.2 in (1250 mm) above. Plan the layout before you order.
Read Before You Order for ceiling, floor and chimney checks. Send us your room size and wall build, and we confirm fit before it ships.
Stove figures from the Harvia Pro and Linear manual (Y05-1330), Table 1 and the safety distance figure, and Harvia's WKPR36M page.
Swipe to see every kit part
| Kit part | Harvia code | What it does |
|---|---|---|
| Wood-burning stove | WKPR36M | Heats the sauna and stones |
| Steel chimney kit, black | WHP1500M | Carries flue gas through the ceiling and roof |
| Protective sheath | WL850 | Cuts the gap to combustibles to 3.54 in / 90 mm |
| Protective bedding | WL110 | Shields tile or wood flooring under the stove |
| Sauna stones | AC3020, 4 to 6 in / 10 to 15 cm | 3 boxes, 132 lb / 60 kg: a full load |
Swipe to see every option
| Deciding factor | Pro 36 package (this page) | Pro 36 stove only | Legend 300 Duo package |
|---|---|---|---|
| Output | 31 kW | 31 kW | 23.5 kW |
| Room volume | 494 to 1271 cu ft / 14 to 36 m³ | 494 to 1271 cu ft / 14 to 36 m³ | 529 to 1059 cu ft / 15 to 30 m³ |
| Max stones | 132 lb / 60 kg | 132 lb / 60 kg | 573 lb / 260 kg |
| Heat style | Fast, hot, dry | Fast, hot, dry | Softer, long-lasting from a big stone mass |
| Where you load wood | Inside the sauna | Inside the sauna | From the next room, through a masonry wall |
| Chimney, sheath, bedding, stones | Included | Sold separately | Included |
| Your situation | Best pick |
|---|---|
| Large room, new build | Pro 36 package |
| Large room, chimney already in place | Pro 36 stove only |
| Room over 1059 cu ft (30 m³) | Pro 36 package: the Legend 300 Duo tops out there |
| Firing from the next room | Pro 36 Duo stove |

+$428 / +$614
Adds insulated chimney height to the WHP1500M kit. See the Harvia chimney extension.

+$212
Adds single-wall pipe inside the sauna below the insulated chimney. See the Harvia 4.5 in smoke pipe.
Sold separately: chimney extensions for taller roofs; floor protection in front of the door on a combustible floor.
Replacement parts: the WL850 sheath is also sold on its own; Harvia lists other spare parts at spareparts.harvia.com.
Harvia heaters carry Harvia's limited warranty against defects in materials and workmanship. In North America, Harvia US Inc. provides the warranty. It covers the first purchaser of a new heater bought from Harvia or an authorized dealer.
Full terms: harvia.com/en/warranty
Questions before you order? Call (866) 861-6317, 9am to 6pm EST, Monday to Friday, or email info@recovathlete.com.
Harvia rates it for 14 to 36 m³. Bare surfaces raise the need: Harvia's own example puts a 10 m³ room with a glass door at about 12 m³, and a 10 m³ log room at about 15 m³.
Not this version; it loads inside the sauna. Harvia's Pro 36 Duo passes through a wall so you can fire it from outside the hot room.
Yes. Harvia's manual covers a masonry flue through the back or top opening. The top route needs a 45° or 90° angled smoke pipe. This package ships the black WHP1500M steel chimney for the top opening.
The WHP1500M kit gives about 7.75 ft of height before the rain cap. For a taller roof, add insulated WHP1000 or WHP500 sections, or extra smoke pipe below them. Both are on Optional Upgrades.
Harvia's maximum for the stove body is 60 kg (132 lb). The package's 3 boxes are a full load. Pile them loosely so air moves between the stones.
Dry firewood only. Use logs 3.1 to 5.9 in (8 to 15 cm) across and no longer than 15.4 in (39 cm). Never burn chipboard, pellets, painted wood, plastics, garden waste or liquid fuel.
The coating smokes as it bakes on. Do that first burn outside if you can, with no stones in the stove. Load the stones only once it has cooled.
Close every opening on the stove and flue to starve the fire of air, and call emergency services. Never use water. A sweep checks the system before you light it again.
Buying for yourself, spread the cost through Affirm at checkout. Buying for a gym, clinic, spa, or studio, apply with one of four business lenders and put the whole room on a single application.
RecovAthlete has no control over any financing decision. Approval is based on your creditworthiness and is solely the lender's decision.
Affirm at checkout. Rates run 0% to 36% APR based on your credit profile. Soft check to prequalify, so no impact on your score. No prepayment penalty.
Brickhouse Capital, Reliant Capital, Acorn Finance, or KWIPPED. Apply with two of the four and compare. Financed equipment can qualify for a Section 179 deduction. Confirm with your accountant.
Every page below has real prices, real monthly payment examples, and the lender comparison for that category. Pick the one you are buying.
Most business buyers are not buying one machine. They are building a room. Sauna, cold plunge, red light, vibration, hyperbaric, cryotherapy, and halotherapy all finance on the same paper through the same four lenders, and RecovAthlete quotes every category on one purchase order.
That means one freight schedule, one install window, and one financing application instead of six. It also gets you a better rate, because a bigger number on one application beats six small ones with six hard inquiries.
See commercial recovery equipment financing, or call 866-861-6317 and we will price the room.
| Lender | Type | Amount | Speed | Best for |
|---|---|---|---|---|
| Affirm | Consumer, at checkout | Order total | Seconds | Personal purchases. 0% to 36% APR based on credit. Soft check to prequalify. |
| Brickhouse Capital | Direct equipment lender | Up to $250K on a one-page application, $1M+ with financials | ~24 hours | A full room or a full floor. Credit decisions made in-house. Tied to the business, not your personal credit report. |
| Reliant Capital | Lender and broker | Up to $500K application-only, $5M with financials | 2 to 4 hours | Medical, aesthetic, and wellness. Deferred payment options. New or used equipment. |
| Acorn Finance | Lending marketplace | $1,000 to $100,000 | 60 seconds to prequalify | Comparing offers. One application goes to 30 or more lenders with no impact to your score. |
| KWIPPED (APPROVE) | Lender marketplace | Minimum $1,500 equipment value | 60-second application | Larger commercial orders. Lenders compete, which usually returns the best APR. Businesses only. |
Apply with two of the four and compare. It costs nothing and the spread between offers is often significant.
Apply with Brickhouse Capital
Apply with Reliant Capital
Check your offers with Acorn Finance
For KWIPPED, call 866-861-6317 or email info@recovathlete.com and we will build the application around your order.
Pay in 4 splits the purchase into four interest-free payments charged every two weeks. Monthly installments spread the cost over a longer term, with rates from 0% to 36% APR depending on your credit profile. You see the exact terms before you agree to anything. No origination fees, no prepayment penalty, no late fees.
Prequalification does not. Affirm and Acorn Finance both run a soft check to show you offers, which has no impact on your score. Proceeding with a monthly installment plan or a business loan may involve a hard inquiry. That is why it pays to prequalify with more than one lender first and only proceed with the best offer.
Yes, and for most business buyers it is the better route. Brickhouse funds up to $250,000 on a one-page application with no financial statements. Reliant approves in 2 to 4 hours. Business financing is usually tied to the business rather than your personal credit report, and financed equipment can qualify for a Section 179 deduction. Confirm the tax position with your accountant.
No. This is the most common and most expensive mistake. Separate applications mean separate hard inquiries, separate payments, and a worse rate on each, because every individual ticket is small. Get one quote from RecovAthlete covering everything you are buying, including freight, and put that single number on one application.
Financed equipment can qualify. Section 179 lets US businesses deduct the cost of qualifying equipment in the year it is placed in service, and financing the purchase does not by itself disqualify it. The equipment must be in service, not merely ordered, within the tax year. Annual limits and eligibility rules are set by the IRS and change year to year, so consult your accountant.
Freight, yes. On Affirm it is part of the order total at checkout. On business financing, put freight on the RecovAthlete quote and the whole quote amount goes on the application. Installation and room construction are harder, because some equipment lenders will not fund non-equipment costs. Ask the lender before you sign.
Yes. Affirm charges no prepayment penalties. Acorn Finance and most business lenders also allow early payoff without penalty.
Tell us what you are buying and whether it is personal or for a business. We will point you at the right two lenders and quote freight and install as one number, which is also the number that goes on the application.
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